Control Characters
A typewriter or electromechanical printer can print characters on paper, and execute operations such as move the carriage back to the left margin of the same line (carriage return), advance to the same column of the next line (line feed), and so on. Commands to control non-printing operations were transmitted in exactly the same way as printable characters by sending control characters with defined functions (e.g., the line feed character forced the carriage to move to the same position on the next line) to teleprinters. In modern computing and communications a few control characters, such as carriage return and line feed, have retained their original functions (although they are often implemented in software rather than activating electromechanical mechanisms to move a physical printer carriage) but many others are no longer required and are used for other purposes.
Read more about this topic: Teleprinter, Teleprinter Operation
Other articles related to "characters, character, control characters, control":
... East Asian languages, specifically Chinese, Japanese, and Korean, use far more characters than can be represented in an 8-bit computer byte and were first represented on computers with language-specific double byte ... as a technique to attack both of these problems to represent characters in multiple character sets within a single character encoding, and to represent large character sets ... So even though ISO-2022 is an 8-bit character set any 8-bit sequence can be reencoded to use only 7-bits without loss and normally only a small increase in size ...
... with native paragraph and line separators independent of the legacy encoded ASCII control characters such as carriage return (U+000A), linefeed (U+000D), and Next Line (U+0085) ... does not provide for other ASCII formatting control characters which presumably then are not part of the Unicode plain text processing model ... These legacy formatting control characters include Tab (U+0009), Line Tabulation or Vertical Tab (U+000B), and Form Feed (U+000C) which is also ...
... The ASCII control characters are almost entirely given new significance under MOS known as the "VDU drivers", they are interpreted as video control characters ... Many more control characters take parameters one or more characters that follow are used solely for their bit value as a parameter and not as a control code ... There is a single operating system command to write a character, OSWRCH, which is responsible for all text and graphics ...
... Caret notation is a notation for unprintable control characters in ASCII encoding ... For example the EOT character with a value of 4 is represented as ^D because D is the 4th letter in the alphabet ... The NUL character with a value of 0 is represented as ^@ (@ is the ASCII character before A) ...
159 Set Tab stop SHIFT+TAB 253 Buzzer CTRL+2 254 Delete Character CTRL+BACK SPACE 255 Insert Character CTRL+> ...
Famous quotes containing the words characters and/or control:
“Socialist writers are made of sterner stuff than those who only let their characters steeplechase through trouble in order to come out first in the happy ending of moral uplift.”
—Christina Stead (1902–1983)
“When a book, any sort of book, reaches a certain intensity of artistic performance it becomes literature. That intensity may be a matter of style, situation, character, emotional tone, or idea, or half a dozen other things. It may also be a perfection of control over the movement of a story similar to the control a great pitcher has over the ball.”
—Raymond Chandler (1888–1959)